1. Reflections on a New Artificial Urinary Sphincter
- Author
-
Drogo K. Montague
- Subjects
medicine.medical_specialty ,business.industry ,Prostatectomy ,Urology ,medicine.medical_treatment ,Mechanical failure ,Urinary incontinence ,Balloon ,Surgery ,Artificial urinary sphincter ,medicine.anatomical_structure ,Cuff ,Medicine ,Sphincter ,Retropubic space ,medicine.symptom ,business - Abstract
Before the early 1970s the treatment of urinary incontinence owing to intrinsic sphincteric deficiency, particularly in men with this problem after prostatectomy, posed a nearly insurmountable challenge. Operations using the patient’s own tissues as well as bulbous urethral sling-type procedures with various types of prosthetic materials produced inconsistent and nondurable results [1–4]. The artificial urinary sphincter was introduced in 1973 [5]. In the first 10 yr after its introduction the basic device design changed four times. The fifth generation model, the AMS Sphincter 800 (American Medical Systems, Minnetonka, MN), was introduced in 1983 [6]. To decrease mechanical failure numerous changes have been made to the various components of this device; however, its basic design and mode of operation have remained unchanged for >20 yr. The AMS Sphincter 800 consists of three components: a urethral cuff, a scrotal pump-control assembly, and a single pressure-regulating balloon (PRB), which is usually implanted in the retropubic space. These three components are implanted individually and then connected by two tubing connectors. The control assembly, which is above the pump, has valves controlling the direction of flow, a delayed filled resistor, and a deactivation button. After the device is implanted, the pump is
- Published
- 2006
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